Why art thou cast down, O my soul? And why art thou disquieted within me? Hope thou in God; For I shall yet praise him, who is the health of my countenance, and my God.
Psalm 42:11
And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
2 Corinthians 12:9
Every branch in me that beareth not fruit he taketh away: and every branch that beareth fruit, he purgeth it, that it may bring forth more fruit.
John 15:2